In the ideal gas equation PV=pRT, 12 relating pressure P, volume V and absolute temperature T, the quantity p is
Options:
Accepted Answer: (A) number of moles
Topic Covered: Physics
Key Concept: Mechanics, electricity, waves and thermodynamics
The correct option follows from the governing physical law or definition. “number of moles” is consistent with the required relationship between the quantities or phenomenon described.
The key is to apply the central fact, formula, definition or relationship tested in the question and then eliminate alternatives that do not satisfy it.